Waste trap



May 5, 1925. 1,535,127

'A. S. NEWTQN WASTE TRAP Filed Jan. 2l, 1924 Patented May 5,1925.

Nnarran srnfrasI 1,536,127 PATENT OFFICE.

ALBERT Sp. NEWTON, O PROVDENCE, RHQDE ISLAND.

wasrn maar. y

Application filed January 21, 1924. Serial No. GBFM.

To ZZ `Lo/71,012; t may concern.'

lle it lrnownthat L Animer S. NEWTON,

a citizen of `the UnitedStates. residing at Providence9 in the count)v of Providence and State of Rhode Island, have invented certain new and useful Improvements in `VV aste Traps, of which the following is a seas to afford a deep seal in the trap. A

few inches increase in the depth of the water constituting the seal means an increase of several weeks in the length of time before the water is evaporated.`

Another object is to provide for rea-dy accessibility to the trap body interior, coinbined with the means for automatically preventing `back pressure and siphonage.

Another object is to adapt the automatic baflling means to bodies of various shapes,

l and also to prevent displacement of the battle plate after its removal from the trap body.`

A further object is to attain these ends in a strong, simple and inexpensive structure.

To the enumerated ends primarily my invention consists in such parts andin such combinations of parts as fall within the scope of the appended claims, y

In the i accompanying` drawings which forma part of this specification,

trap embodying my invention,

Figure 2, a section of the same on line 2 2 of Figure 1, and v Figures 3 and 4t, vertical central sections of modified forms of my invention.

Like reference characters indicate like parts throughout the views.

In the form of my invention shown in Figures 1 and 2, a substantially cylindrical trap body 6 has intermediate its length an internal annular flange 8 dividing the interior into upper and lower chambers 10 and 11 communicating with each other through a central opening 12. Opening into the tra-p near its bottom is a pipe 15 aording a water inlet 16 into the lower portion of the chamber 11. A pipe 18 in the upper portion of the body affords an outlet opening' 1S) from the upper portion of the chamber 10. In the top of the body is an opening` 22 with a thread 23 engaging a thread Figure 1 is a central vertical section of a` 2li on a flange 25 inset from the 'periphery of a plate 27 constituting a removable cover for closing the opening 22. A polygonal projection 29 accommodates wrench. Fast in `a threaded socket 30 in thecover is a depending or vertical tubular post 32 in which is slidably mounted a rod 38 in which is fixed a laterally projecting pin 85 extending loosely into a longitudinal slot 86 in an intermediate portion of the post. F ixed to the lower end of the rod 83 is a downwardly directed convexe concave baffle plate 38. This plate normally rests by gravity upon ,the flange 8, thus covering the opening.

rThe movement of the water is from the inlet pipe upwardly through the body and the outlet pipe, impeded by the flange 8, and by the baffle plate 38 which rises under pressure to a position against the post 82 shown in broken lines in Figure 1.` After passage 'of the water as described the baffle plate by gravity returns into contact with the flange and prevents back pressure. rllhe location of the cover in the top of the trap aifords accessibility to the trap from above making it possible to utilize the trap in a bath room `fioor adjacent the bath tub. In removing Athe cover 27 from the trap the rod 38 is prevented from accidental escape by the contact of the pin 35 with the post at the eX- tremity of the slot 86.

ln the modified form of my invention shown in Figure 3 the baffle plate 40 is upwardly directed, and cooperates with the edge of the flange 8.1 rather than with the face of the flangein effecting a closure. The cover 27 is herein located in an opening 41 in the bottom of the trap rather than in the topthereof. ln this construction the outlet pipe 18 is located in the-center of the top of the trap.` The baffle plate normally rests upon the top of the post 32. The water under moderate pressure passes from the pipe 15 upwardly over the baffle plate 4U,

through the opening 12 and thence through the outlet pipe 18; but under increased force the water in its passage elevates the baffle plate to the position shown in broken lines, thus cutting off the flow and preventing siphonage. v

In the modified form of my invention shown in Figure 4 the parts are as those shown in Figure 3 except that the post 32 extends into the chamber 10.` and the baille plate 40, of less diameter, engages the top of the trap body at the mouth of the pipe 18 lio to close the passage 19 when the force of the water is increased.

I claim I. In a waste trap, a body having upperl and lower chambers, the latter constituting` the seal chamber, said chambers being provided with outlet and inlet respectively, a seat intermediate said inlet and outlet, and al baille interposed between said inlet and outlet and movably mounted for cooperation with said seat, said batlie constructed to retard the inflow of the water to maintain maximum water in the seal chamber, and to automatically prevent back pressure and siphonage.

Q. In a waste trap, a body having` inlet and outlet and upper and lower chambers, the latter constitutingV the seal chamber, said chambers being disposed upon opposite sides of a seat, and a baffle interposed between said inlet and outlet and movably mounted for cooperation with said seat, said bafiie constructed to retard the inow of the water to maintain maximum water in the seal chamber, and to automatically prevent back pressure and siphonage, said baiiie having` concave surface for the impact of the incoming,` water.

3. In a waste trap, a body having upper and lower chambers, the latter constituting the seal chamber` said chambers being provided with outlet and inlet respectively, a seat intermediate said inlet and outlet, and a baille .interposed between said inlet and outlet and movably mounted for cooperation with said seat, said baffle constructed to retard the iniiow ot the water to maintain maximum water in the seal chamber and to automatically prevent back pressure and siphonage, said baii'ie having concave survlace for the impact of the incoming water, and a guide for said baiiie with means to prevent displacement of the latter.

4. In a waste trap, a body provided with an inlet, and an outlet, said body being provided vvith an opening spaced from the inlet and outlet, an annular seat in the body intermediate the inlet and outlet, a cover detachably mounted in the opening, a tubular post on the cover provided with a longitudinal slot, a rod slidably mounted in the post. a projection on the rod registering,r in the slot, and a baille plate on the rod engageable with the seat.

In testimony whereof I have ai'lixed my si gn ature.

ALBERT S. NEIN/"ION, 

